Frequencies evaluation in estimation of tree species diversity in degraded forests Case study: Kouhmian forests, Azadshahr, Golestan province

Document Type : Research Paper

Authors

1 Ph. D. Student., Faculty of Natural Resources, University of Guilan, Someh sara, Iran

2 Associate Professor, Faculty of Natural Resources, University of Guilan, Someh sara, Iran

Abstract

Aim of this research was evaluated and compared of density (number tree per hectare), basal area and volume characteristics for estimation of tree species diversity in degraded forests. In order to, 73 hectares of Kouhmian forests was inventory based on random systematic pattern with circular plots (10R and 26 plots). In each plot species, DBH and number of tree were measured and recorded. To estimate of tree species diversity was used from Simpson, Hill’s N2, Shannon-Wiener and Mc Arthur’s N1 indices and for calculation of evenness and species richness were used from Wilson- Smith’s and Margalef indices respectively. Also species importance value (SIV) was calculated. The results showed that forest structure is irregular and uneven structure. Also the results showed that in calculation of diversity and evenness indices, if density is selected as calculation criteria, amount of these indices is more than to volume and basal area that are selected as calculation criteria. The results of SIV showed that the highest value of SIV belonged to Carpinus betulus (212.52%) and the lowest value belonged to Zelkova carpinifolia (6.82%). Also Margalef index showed that amount of richness is equal to 1.13.

Keywords

References

[1]. Amiri, M., Dargahi, D., Azadfar, D., and Habashi, H. (2009). Comparison structure of the natural and managed oak (Quercus castanifolia) stand (shelter wood system) in forest of Loveh, Gorgan. Journal of Agricultural Sciences and Natural Resources, 15(6): 45-56.
[2]. Singh, J. S. (2002). The biodiversity crisis: a multifaceted review. Current Science, 82: 499-500.
[3]. Hoagland, B. W., Sorrels, L. R., and Glenn, S. M. (1996). Woody species composition of floodplain forests of the Little River, McCurtain, Oklahoma. Oklahoma Academic Science, 76: 23-29.
[4]. Johnson, F. L. (1986). Woody vegetation of southeastern LeFlore County, Oklahoma, in relation to topography. Oklahoma Academic Science, 66: 1-6.
[5]. Ardakani, M. R. (2003). Ecology, University of Tehran Press, Tehran.
[6]. Pourbabaei, H. and Abedi, T. (2009). Study on stand structure and plant biodiversity in Box tree (Buxus hyrcana Pojark) site, Kish Khaleh, Talesh, Guilan. Pajouhesh and Sazandegi, 80: 122-128.
[7]. Pourbabaei, H. and Dado, Kh. (2005). Species diversity of woody plants in the district No. 1 forests, Kelardasht, Mazandaran province. Iranian Journal of Biology, 18(4): 307-322.
[8]. Pourbabaei, H. and Abedi, T. (2008). Study on stand structure and plant biodiversity in Box tree (Buxus hyrcana Pojark.) site, Kish Khaleh, Talesh, Guilan. Pajouhesh and Sazandegi, 80: 122-128.
[9]. Pourbabaei, H., Abedi, T., and Zaree, A. (2010). Study on stand structure and plant biodiversity in Box tree (Buxus hyrcana Pojark) site, Anjilbon, Guilan. Iranian Journal of Biology, 23(1): 9-17.
[10]. Neumann, M. and Starlinger, F. (2001). The significance of different indices for stand structure and diversity in forests. Forest Ecology and Management, 145: 91-106.
[11]. Razavi, S. A. (2008). Flora study of life forms and geographical distribution in Kouhmian region (Azadshahr- Golestan province). Journal of Agricultural Sciences and Natural Resources, 15(3): 98-109.
[12]. Aubert, M., Alard, D., and Bureau, F. (2003). Diversity of plant assemblages in managed temperate forests: a case study in Normandy (France). Forest Ecology and Management, 175: 321-337.
[13]. Webb, E. and Sah, R. N. (2003).  Structure and diversity of natural and managed sal (Shorea robusta) forest in the Terai of Nepal. Forest Ecology and Management, 176: 337-353.
[14]. Krebs, J. C. (1999). Ecological methodology. 2nd ED., Benjamin Cummings, Menlo Park, California.
[15]. Andel, T. V. (2001). Floristic composition and diversity of mixed primary and secondary forests in northwest Guyana. Biodiversity and Conservation, 10: 1645-1682.
[16]. Nath, P. C., Arunachalam, A., Khan, M. L., Arunachalam, K., and Barbhuiya, A. R. (2005). Vegetation analysis and tree population structure of tropical wet evergreen forests in and around Namdapha National Park, northeast India. Biodiversity and Conservation, 14: 2109-2136.
[17]. Onyekwelu, J. C., Mosandl, R., and Stimm, B. (2008). Tree species diversity and soil status of two natural forest ecosystems in lowland humid tropical rainforest region of Nigeria. Journal of Tropical Forest Science, 20(3): 193–204.
[18]. Caspersen, J. and Pacala, S. (2001). Successional diversity and forest ecosystem function. Ecology Research, 16: 895-903.
[19]. Schmid, B. (2002). The species richness-productivity controversy. Trends in Ecology and Evolution, 17: 113-118.
[20]. Haidari, M., Jalilvand, H., Haidari, R. H., and Shabanian, N. (2012). Study of plant biodiversity in grazed and non-grazed areas in the Iran-o-Turanian ecological zones (case study: Yazd province, Iran). Annals of Biological Research, 3 (11): 5019-5027.
Forest and Wood Products
Volume 68, Issue 4 - Serial Number 4
January 2016
Pages 971-979

Files

Share

How to cite

Statistics